[Tcl-nap-users] replace missing value

[<Guo...@cs...>]

Hi, Harvey and all,

We would like ti export a vailabe into a text file and changing all
missing value with -9999. We know that the below command could replace
the missing values in the variable into -9999,=20

[nap "$variable"] value -miss -999=20

but how to write it into textfile as we use this command:

puts $file "[$variable value]"

Both commands work independly, but my question is how to change the
"variable in second command with the command one. Any help is
appreciated.

Thanks
Guobin